Sell your Soul

You have four Soul points.  You can spend these points whenever you make any sort of roll to get the best possible outcome.  Every point you spend after the first one also is equal to a permanently failed death save.  Once you've spent all your Soul points, you immediately die when you drop to 0 hp, unless it is by an effect that does not kill you when you drop to 0 hp.  You can regain your Soul points using a Fates card from a deck of many things(restores all points) or by using the spell Wish (restores one point, only works once)